accessing elements in multi-dimensional sequences

[Rodrigo Daunaravicius]

Is there an elegant way to directly refer the 2nd dimension of a
multi-dimensional sequence (like the nth character in a list of strings).
An example would be deleting the newline in all the strings from a list
obtained through readlines without recurring to 'for' loops.
I would expect this to work:

>>> d
['0891931243\n', '0325443777\n', '0933477028\n', '0699624617\n',
'0922210996\n']
>>> del d[:][-1]
>>> d
['0891931243', '0325443777', '0933477028', '0699624617', '0922210996']

But it doesn't, d remains unchanged.

Another attempt produced what seemed to me like a counter-intuitive result

>>> b=d[:][:-1]
>>> b
['0891931243\n', '0325443777\n', '0933477028\n', '0699624617\n']


Regards from a python newbie,
Rodrigo Daunarovicius